"The Disturbing Charm" by Berta Ruck is a novel written in the early 20th century. The book intertwines themes of love and attraction through the use of a mysterious charm invented to influence romantic connections. At the heart of the story is Olwen Howel-Jones, a young woman navigating her feelings and desires, as well as the lives of those around her, especially concerning their romantic entanglements. The opening of the novel introduces Professor Howel-Jones, who receives an intriguing letter detailing a sensational discovery about a "Disturbing Charm," purported to assist individuals in finding love with the right partners. As he ponders this whimsical notion, his niece Olwen enters the scene, a spirited young woman who soon becomes infatuated with the idea of the charm, particularly after discovering it in a small packet enclosed in the letter. Delighted yet curious about its potency, Olwen decides to test the charm on others, starting with the lonely spinster Miss Walsh, hoping to affect change in her life while reflecting on her own romantic aspirations amidst the backdrop of World War I. The narrative sets the stage for exploring both the charm's influence and the complexities of human relationships during an era of societal upheaval. (This is an automatically generated summary.)